Lr123

Hi I am wondering if I can replace my double passenger seats with one single as I have a 2018 transit connect long wheel base which I am converting into a camper. The headrest of both passenger seats are connected to the bulkhead, in order to comply with the law I will have to replace these double seats with a single seat with a headrest on it. Will the single seat fit in the double passenger seat fittings or am I in trouble? Many thanks